Re: [uCsimm] UDP/IP functions

From: Daniel J. Feren (
Date: Wed Jan 05 2000 - 16:58:00 EST

Hey Vladimir,

    Thank you for the information.

I'm more interested in UDP, for its low overhead and speed, rather
than something reliable. I'll hypothetically gain reliability with frequent
updates from the uCSimm.

Humm, host name resolution won't be a big concern from the ucSimm point
of view for me. I'm gonna have many uCSimm clients and one PC server.
The uCSimm clients will know the server's ip at some initialization. and the
PC server can reply to whomever it just received a packet from.

So it sounds as if at least the core of UDP is working with uCLinux;
but I'm thinking all I'll initially need from uCLinux is the sendto and recv system

thanks again,

Daniel James Feren
Georgia Institute of Technology, Computer Engineering

Vladimir Gurevich wrote:

> Hello Daniel, > > "Daniel J. Feren" wrote: > > > Does anyone know if the current release of uCLinux contains > > UDP/IP functions? > > Which functions are you referring to? Usually you send UDP packets using > socket interface (using read/write or sendto/recvfrom). These are all > in place (and BTW these are system calls and not library functions). > Of course, other socket-related system calls are there, like > socket(), bind(), etc. > > Hostname resolution is currently a little worse than you might expect > from > a standard linux system, (e.g. hosts file is not searched, "search" > directive in resolv.conf doesn't seem to work, etc.) but is still > decent. > > BTW, NFS (which uses RPC over UDP) is working fine and is quite stable > (at least from UDP-related point of view) on uClinux. > > Happy hacking, > Vladimir > > -- > +------------------+------------------------+--------------------------+ > | | | | > | :|: :|: | phone 408-525-9707 > Vladimir Gurevich | :|||: :|||: | fax 408-527-1713 > Software Engineer | .:|||||||:..:|||||||:. | > NUBU/DIAL | CiscoSystems | e-mail > | | location SJ-7-2 Cube D1-12 > | | > +------------------+------------------------+--------------------------+ > This message resent by the list server

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